Pressure applying pads



Aug. 19, 1958 N. v. GERMANY PRESSURE APPLYING PADS Filed sept. 12, 195s2 Sheets-Sheet l Inventor IVO/"man V Germany Aug. 19 1958 N. v. GERMANYPRESSURE APPLYING PADS 2 Sheets-Sheet 2 Filed sept. 12. 195s InventorNorman V66/man3 United States Patent C) PRESSURE APPLYIN G PADS NormanVictor Germany, Leicester, England, assignor to United Shoe MachineryCorporation, Flemington, N. J., a corporation of New Jersey ApplicationSeptember 12,1956, Serial No. 609,386

Claims priority, application Great Britain October 7, 1955 Thisinvention relates to shoe bottom pressing pads for use in cement soleattaching presses, and more particular ly to an improved pad of the typedisclosed in United States Letters Patent No. 2,205,400, granted June25, 1940, upon an application tiled in the name of Sidney l. Finn.

The pad of the aforementioned patent comprises a solid rubber orepaitportion, a solid rubber heel portion, and an intermediate or shankportion made up of a plurality of rubber sections extending transverselyand longitudinally of the pad, each section being housed in a metalcasing resting against the top of a rubber water bag supported on thebottom of a pad box, whereby the pad sections, in response to pressureof a sh-oe in the cement sole attaching operation, may move relativelyto each other bodily heightwise of the pad and also about axes extendinglengthwise of the pad to enable them to accommodate themselves to thecurvature of the shank portion of the shoe bottom.

It is an object of the present invention to provide an improved pad ofthe type above referred to, whereby the sectional shank portion of thepad may be made even more effective than heretofore in operating uponthe rounded shank portion of womens shoes, to enable the pad to exertuniform Ipressure against all portions of the bottom of the shoe.

To this end, and in accordance with a feature of the invention, there isprovided a pressure applying pad comprising a forepart portion and aheel end portion, each formed of a solid but resilient block of rubber,and a shank portion consisting of a plurality of rubber sections. Asherein illustrated, each section comprises two members pivotally mountedbetween two metal strips, whereby not only may the pair of members ofeach section move, as heretofore, bodily as a unit heightwise of thepad, but each member may pivot individually about an axis extendinglengthwise of the pad, thus enabling the shank sections of the pad toconform closely to the curvature of the shank portion ot the shoe bottomand to press the marginal portions of a sole against the bottom of ashoe with uniform pressure, even though the shoe may be slightlymisplaced on the pad.

In the drawings,

Fig. l is a side elevation, partly broken away and partly in section,illustrating the novel pad provided by the invention installed on a padbox and supporting a sole and a shoe to which the sole is to beattached;

Fig. 2 is a View in front elevation of one of the sections constitutingthe shank portion of the pad; and

Fig. 3 is a section along line ill-lll of Fig. 2.

The illustrated pressure pad is particularly adapted for use in a padbox of the type disclosed in United' States Letters Patent No.2,568,065, granted lSeptember 18, 1951, upon an application tiled in thename of Helge Gulbrandsen. This box comprises angularly adjustablebottom parts 10, 12 and 14 which support an under pad, which may be arelatively soft rubber Water bag, as in the pre- ICC viously mentionedGulbrandsen patent. In the illustrated embodiment of the invention theunder pad consists of a series of layers 16 of low durometer rubber,substantially as disclosed in an application for United States LettersPatent, Serial No. 519,125, tiled lune 30, 1955 now Patent No.2,810,142, granted October 22, 1957 in the name of Helge Gulbrandsen.

Rest-ing on the top layer of the under pad is an upper pad of the typedisclosed in the above-mentioned Finn Patent and comprising a solidrubberl forepart portion 18, a solid rubber heel portion 20, and anintermediate or shank portion which, as in the aforementioned Finnpatent, consists of a plurality of rubber sections 22, each sectioncomprising a pair of members 24, 24 (Fig. 2), In contrast, however, tothe arrangement in the Finn patent, where the pair of members comprisinga section is housed in a metal casing resting on top of the under pad,in the pad of the present invention each member of a pair is pivotallymounted between two metal. strips 26, 26 so that each member can, byswinging about its pivot, accommodate itself individually to the portionof the sole on which it operates.

For this purpose each rubber member 24 has its lower portion reduced oneach side at 28 by an amount slightly less than the thickness of themetal strips. Each rubber member has provided at approximately thecenter of its reduced portion a hole 3i) which is of such a diameter asto allow free rotary movement of the member on the center portion or" apin 32. The length of the center portion of the pin is slightly greaterthan the thickness of the lower portion of the rubber members. Extendingaxially in opposite directions from the center portion of the pin areshort stems 34, 34, of less diameter than lthe center portion, so as toprovide shoulders on the pin against which the strips, which areprovided with two holes of the same diameter as the stems, may belocated and tixed by riveting over and ling flush the ends of the stems.The rubber members 24, 24 are thus confined between the pair of strips26, 26, but are free to pivot on the pins 32. Moreover, a gap is leftbetween the two rubber members of each section so as not to restrict thepivotal movement of the members. The arrangement of the strips in theassembly just described is such that a slight space is provided betweenthe rubber members of one section and those of the adjacent sections toprevent frictional engagement between die members of the varioussections. As indicated at 36 in Fig. 2, the lower edge of each rubbermember 24 may be cut away at a slight angle on each side of the hole toenable the member to rock freely on the under pad.

It will thus be appreciated that when a number of these sections havingsuitable upper contours `are placed side by side to form theintermediate portion of the pad and the pad is pressed against a shoebottom, not 'only is each section able to rock upon or sink into theunder pad, but each rubber member is able to pivot individually aboutits pin to accommodate itself closely to the curvature of the shankportion of the sole, thereby to insure that the marginal portions of thesole are iirmly pressed against the shoe bottom to cause them to adheretogether right to the feather, which is essential. The provision forpivotal movement of each rubber section also allows the sections toaccommodate themselves accurately, even though the shoe may be slightlymisplaced on the pad.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

l. In an apparatus for use in applying: pressure to shoe bottoms havingan underpad, a pressure pad overlying the underpad comprising a singleresilient forepart portion, a single resilient heel portion, and a shankportion consisting of a plurality of resilient, transverselyextendingsections, each section comprising a pair of members, and means mountingthe pair of members of each section for movement together as a unitrelatively to the other sections heightwise of the underpad and also forpivotal movement individually about an axis extending lengthwise of saidunderpad. y

2. A pad for applying pressure to shoe bottoms comprising a forepartportion, a heel portion and a shank portion, said shank portion beingdivided int-o a plurality of transversely extending sections, eachsection comprising a pair of pressure applying members, a metal stripextending lengthwise of each section at either side thereof, 1and meanspivotally connecting each member of a section to said metal strips,whereby the two members of each section are conned between two metalstrips to move as a unit and each member is capable of pivotingindependently in accordance with variations in the curvature of theshank portion of a shoe.

3. A pad for applying pressure to shoe bottoms comprising a forepartportion, a heel portion and a shank portion, said shank portion beingdivided into a plurality of transversely extending sections, eachsect-ion comprising a pair of pressure applying members each having a ,4lower reduced portion, metal strips extending lengthwise of the lowerreduced portions of the pair of members of each section at oppositesides thereof, said lower portions of the members being reduced by anamount less than the thickness of the metal strips.`

4. In an apparatus for use in applying pressure to shoe bottoms havingan underpad, a pressure pad overlying the underpad comprising a singleresilient forepart portion, a single resilient heel portion, and a shankportion, said shank portion consisting of a plurality of resilient,transversely extending sections, each section comprising a pair vofmembers, and means mounting the pair of members of each section formovement together as a unit relatively to the other sections heightwiseof the underpad and also for pivotal movement individually about 'anaxis extending lengthwise of said underpad, the lower edge of eachmember of a section being shaped so as to facilitate the rockingmovement of the member on the underpad.

References Cited in the le of this patent

